Twilight ๐ŸŒ… Blue light filter for better sleep APK

Twilight ๐ŸŒ… Blue light filter for better sleep screenshot 1Twilight ๐ŸŒ… Blue light filter for better sleep screenshot 2Twilight ๐ŸŒ… Blue light filter for better sleep screenshot 3Twilight ๐ŸŒ… Blue light filter for better sleep screenshot 4Twilight ๐ŸŒ… Blue light filter for better sleep screenshot 5Twilight ๐ŸŒ… Blue light filter for better sleep screenshot 6Twilight ๐ŸŒ… Blue light filter for better sleep screenshot 7Twilight ๐ŸŒ… Blue light filter for better sleep screenshot 8Twilight ๐ŸŒ… Blue light filter for better sleep screenshot 9Twilight ๐ŸŒ… Blue light filter for better sleep screenshot 10Twilight ๐ŸŒ… Blue light filter for better sleep screenshot 11Twilight ๐ŸŒ… Blue light filter for better sleep screenshot 12Twilight ๐ŸŒ… Blue light filter for better sleep screenshot 13Twilight ๐ŸŒ… Blue light filter for better sleep screenshot 14Twilight ๐ŸŒ… Blue light filter for better sleep screenshot 15
Twilight ๐ŸŒ… Blue light filter for better sleep 12.3 apk, update on 2021-02-11
Are you having trouble falling asleep? Are your kids hyperactive when playing with the tablet before bed time?
Are you using your smart phone or tablet in the late evening? Twilight may be a solution for you!

Recent research suggests that exposure to blue light before sleep may distort your natural (circadian) rhythm and cause inability to fall asleep.

The cause is the photoreceptor in your eyes, called Melanopsin. This receptor is sensitive to a narrow band of blue light in the 460-480nm range which may suppress Melatonin production - a hormone responsible for your healthy sleep-wake cycles.

In experimental scientific studies it has been shown an average person reading on a tablet or smart phone for a couple of hours before bed time may find their sleep delayed by about an hour. See references below..

The Twilight app makes your device screen adapt to the time of the day. It filters the flux of blue light emitted by your phone or tablet after sunset and protects your eyes with a soft and pleasant red filter. The filter intensity is smoothly adjusted to the sun cycle based on your local sunset and sunrise times.


Documentation
http://twilight.urbandroid.org/doc/

Get more from Twilight
1) Bed reading: Twilight is more pleasant on the eyes for night reading. Especially as it is able to lower the screen backlight far below the ability of the backligt controls on your screen

2) AMOLED screens: We have tested Twilight on an AMOLED screen for 5 years without any sign of depletion or over-burning. If properly configured Twilight causes less light emission (by enabling dimming) with more equal light distribution (dark areas of the screen such as the status bar get tinted). This may in fact increase your AMOLED screen life time.

Basics on circadian rhythm and the role of melatonin
http://en.wikipedia.org/wiki/Melatonin
http://en.wikipedia.org/wiki/Melanopsin
http://en.wikipedia.org/wiki/Circadian_rhythms
http://en.wikipedia.org/wiki/Circadian_rhythm_disorder

Permissions
- location - to find out your current sunset/surise times
- running apps - to stop Twilight in selected apps
- write settings - to set back-light
- network - access smartlight (Philips HUE) to shield you household light from blue

Automation (Tasker or other)
https://sites.google.com/site/twilight4android/automation

Related scientific research

Amplitude Reduction and Phase Shifts of Melatonin, Cortisol and Other Circadian Rhythms after a Gradual Advance of Sleep and Light Exposure in Humans Derk-Jan Dijk, & Co 2012

Exposure to Room Light before Bedtime Suppresses Melatonin Onset and Shortens Melatonin Duration in Humans Joshua J. Gooley, Kyle Chamberlain, Kurt A. Smith & Co, 2011

Effect of Light on Human Circadian Physiology Jeanne F. Duffy, Charles A. Czeisler 2009

Efficacy of a single sequence of intermittent bright light pulses for delaying circadian phase in humans Claude Gronfier, Kenneth P. Wright, & Co 2009

Intrinsic period and light intensity determine the phase relationship between melatonin and sleep in humans Kenneth P. Wright, Claude Gronfier & Co 2009

The Impact of Sleep Timing and Bright Light Exposure on Attentional Impairment during Night Work Nayantara Santhi & Co 2008

Short-Wavelength Light Sensitivity of Circadian, Pupillary, and Visual Awareness in Humans Lacking an Outer Retina Farhan H. Zaidi & Co, 2007

High sensitivity of the human circadian melatonin rhythm to resetting by short wavelength light. Lockley SW & Co. 2003

Sensitivity of the human circadian pacemaker to nocturnal light: Jamie M Zeitzer, Derk-Jan Dijk & Co 2000

List Twilight ๐ŸŒ… Blue light filter for better sleep APK files with old version


+ Twilight ๐ŸŒ… Blue light filter for better sleep version 12.3 (Updated: 2021-02-11 00:00:00, size: 6,313,695)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 12.2 (Updated: 2021-01-18 00:00:00, size: 6,313,341)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 12.0 (Updated: 2020-11-02 00:00:00, size: 7,272,286)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 11.8 (Updated: 2020-09-12 00:00:00, size: 7,240,645)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 11.5 (Updated: 2020-08-11 00:00:00, size: 6,665,903)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 11.4 (Updated: 2020-07-15 00:00:00, size: 6,803,816)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 11.2 (Updated: 2020-05-23 00:00:00, size: 6,798,732)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 11.1 (Updated: 2020-03-07 00:00:00, size: 6,775,301)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 11 (Updated: 2020-01-11 00:00:00, size: 5,813,807)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 11 (Updated: 2019-12-03 00:00:00, size: 5,813,326)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 10.4 (Updated: 2019-11-06 14:05:38, size: 5,651,261)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 10.3 (Updated: 2019-10-04 04:35:13, size: 5,515,545)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 10.2 (Updated: 2019-08-23 13:18:48, size: 5,498,288)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 10.1 (Updated: 2019-08-09 04:06:21, size: 5,532,766)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 9.9 (Updated: 2019-06-24 06:16:20, size: 5,530,900)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 9.9 (Updated: 2019-05-27 18:41:12, size: 5,530,158)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 9.8 (Updated: 2019-05-07 15:00:44, size: 5,529,909)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 9.6 (Updated: 2019-04-26 13:01:56, size: 5,735,926)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 9.4 (Updated: 2018-12-04 16:05:32, size: 5,574,671)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 9.1 (Updated: 2018-11-13 05:43:07, size: 5,575,595)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 9.1 (Updated: 2018-09-21 21:59:22, size: 5,354,800)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 9.0 (Updated: 2018-08-19 04:30:07, size: 6,041,478)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 8.3 (Updated: 2018-05-29 14:25:20, size: 5,997,426)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 8.3 (Updated: 2018-05-18 16:00:23, size: 5,995,109)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 8.2 (Updated: 2018-03-14 21:59:16, size: 6,004,861)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 8.1 (Updated: 2017-12-15 08:16:23, size: 5,914,158)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 8.1 (Updated: 2017-12-01 17:46:30, size: 5,914,418)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 8.0 (Updated: 2017-11-20 13:08:49, size: 5,913,242)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 8.0 (Updated: 2017-11-13 18:45:35, size: 5,913,242)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 5.7 (Updated: 2017-11-13 08:03:30, size: 4,821,735)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 7.6 (Updated: 2017-10-24 10:14:47, size: 4,656,171)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 5.6 (Updated: 2017-10-21 08:00:15, size: 4,819,659)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 6.8 (Updated: 2017-10-21 03:54:10, size: 4,248,310)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 7.8 (Updated: 2017-10-18 13:20:23, size: 4,997,840)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 7.7 (Updated: 2017-09-30 02:59:40, size: 4,985,996)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 7.7 (Updated: 2017-09-21 14:35:42, size: 4,855,843)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 7.7 (Updated: 2017-09-19 23:03:25, size: 4,686,356)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 7.7 (Updated: 2017-09-17 16:55:45, size: 4,682,379)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 7.5 (Updated: 2017-08-17 21:00:16, size: 4,656,511)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 7.5 (Updated: 2017-07-28 21:12:58, size: 4,655,679)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 7.4 (Updated: 2017-07-24 20:44:12, size: 4,580,580)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 7.3 (Updated: 2017-04-05 15:12:39, size: 4,595,543)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 7.3 (Updated: 2017-03-21 19:01:54, size: 4,514,571)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 7.1 (Updated: 2017-03-17 09:39:23, size: 4,483,000)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 7.1 (Updated: 2017-03-16 06:32:52, size: 4,484,160)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 7.0 (Updated: 2017-01-18 01:40:18, size: 4,737,106)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 7.0 (Updated: 2017-01-09 13:37:12, size: 4,652,041)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 6.9 (Updated: 2016-12-05 12:35:15, size: 4,516,291)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 6.7 (Updated: 2016-10-21 19:25:25, size: 4,244,712)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 6.6 (Updated: 2016-07-04 05:15:49, size: 5,516,833)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 6.6 (Updated: 2016-06-20 08:12:32, size: 5,514,130)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 6.5 (Updated: 2016-06-15 03:19:47, size: 5,512,288)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 6.4 (Updated: 2016-06-02 02:32:13, size: 5,445,099)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 6.3 (Updated: 2016-03-26 11:32:19, size: 5,211,214)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 6.3 (Updated: 2016-03-18 06:14:29, size: 5,210,409)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 6.2 (Updated: 2016-03-09 07:27:56, size: 5,190,100)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 5.9 (Updated: 2016-02-29 06:37:08, size: 4,847,578)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 5.4 (Updated: 2016-01-12 14:40:33, size: 2,083,169)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 5.1 (Updated: 2016-01-12 14:40:31, size: 2,057,053)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 4.9 (Updated: 2016-01-12 14:40:29, size: 2,047,030)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 4.8 (Updated: 2016-01-12 14:40:27, size: 2,046,696)
+ Twilight ๐ŸŒ… Blue light filter for better sleep version 4.6 (Updated: 2016-01-12 14:40:25, size: 1,996,160)

Twilight ๐ŸŒ… Blue light filter for better sleep APK reviews


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Subhajit Chakraborty review Subhajit Chakraborty
Great for night time phone usage. Would love to have more color choices.
I am using it for a month so it's time for rating. App works great. Filter seriously relief eye stress from night time usage. Actually i am typing the review by activating this app right now. Also automatic activation of this app depending on sun โ˜€ rise is pretty cool and work flawless. Would love to see more colour choice because red always gets monotonous. Overall definitely 5 star ? app.
Chris Ziffer review Chris Ziffer
Astrophotographer's Delight
I was originally looking for an astrophotography red light function for my Droid Turbo 2 to help preserve my night vision. I thought I wanted something that I could turn off and on manually with a few taps. Decided to give this a try, and couldn't be happier. I still have the ability to control the main brightness through the settings on my phone , but now it is amplified based on my settings that I choose within your app during night the hours between sunset and sunrise. Excellent functionality. ??
Joe Doyle review Joe Doyle
App Permissions Problem
Having a tough time with the permissions, seems as if once this app is enabled everything to do with screen overlay turns off. All my whatsapp contacts were un-synced, and SMS is also having permission issues. Does this happen to everyone else? I obviously need to be able to fully utilize my phone before bed. Other than that, nice UI and easy to use/navigate. HELP!!
 review
Awesome, feel it working
I recently started healthy sleeping habits and not only does Twilight make my phone's screen very gently before sleep, it also serves to remind me bed time is coming. I feel sleepy now when it turns on and have been sleeping well. I even got red lens glasses to wear in the evenings... Makes a huge difference!
Linda N review Linda N
Doesn't work
Not dimming or taking out blue. Tried to set custom but tapping that button just halts program as that button seems to be on top of the custom button. Update: finally got it to dim by setting up a "bedtime" mode and manually turning it on & off but...the if you try to use it it will blink With your normal screen setting pretty often. That's an eye opener! Not for me, unless fixed.
Jonas Golland review Jonas Golland
Inspiring
Thanks, very good for my mind, flexible options even though complex but that's in depth at least, very smooth transitioning, helpful and inspiring attention to colour. Update 21.9.16... very good, it's sorting out its bugs of switching off while using other apps. I like having it on always. Sometimes it would stall my LG keyboard app for long time so I uninstalled it. Months later reinstalled, had same problem for weeks until a week ago, seems ok. Colours are good, a bit more yellow might be better.
Lisa review Lisa
It's pretty good
Only thing is that I have app installed (like pie, quick gesture buttons) the filter does not apply to it. what can I do about that? also I have a screen lock that it won't show the filter with and if I don't turn off these apps at night then I will be blinded ? could you fix these things? Using omni swipe and gesture lock screen...
Nazim Ali review Nazim Ali
relax my eyes after used it
Michael Monti review Michael Monti
You know I really like it. I don't really use the red filter because it kind of throws me off personally, but it can really drastically lower the brightness level (screen dim) twice as much as the phone's settings, with the range of 0% to 80% to choose from. I'm sure this will greatly help my battery time. Great job with this app guys. It took me less than 10 minutes to learn all the settings and operations and so far I haven't seen a single ad. So I'm going to say there aren't any although I could be wrong.
Andria VanBuskirk review Andria VanBuskirk
Definitely helps my eyes! Too early to know if it will help w/ headaches & sleep. I have it set to "always on" but I am constantly having to put it back on! Seems like this issue keeps the app from helping in the long run.
Brandon Blair review Brandon Blair
This used to be an absolute required 5 star app until Oreo destroyed it. It's not the apps fault but not having lock screen or top-down menu make them both blinding and make the app only barely useful. Hopefully there is a workaround. This app was the best!
Brian Hair review Brian Hair
Twilight fades very smoothly to red hues as the sun sets automatically on its own. I hardly notice it's even doing it at all most days. Runs silently in the background and doesn't bother me and is very easy to turn off if I do need to have blue in whatever I'm looking at after sunset. Very impressed with this app and how polished it is. I did some initial configuration and have left it alone ever since. A nice "set it and forget it" app. I don't have any conclusive evidence to suggest it's helping me to sleep better but the screen is easier on my eyes at night with it enabled on my Nexus 6. So there's that at least.
Joseph Gottwald review Joseph Gottwald
Awesome
Has helped me fall asleep earlier. They responded really quickly to a bad update to fix the glitches too
Rajaa Saroy review Rajaa Saroy
Crash issue fixed with update
Good app. Faced an issue for the first time in years of usage which was fixed within a day! Kudos to the developers
dragothica review dragothica
Crashing issue possibly fixed with newest update?
At least it hasn't crashed yet since update. Nexus 6 Android 7.0.